How to convert xlsx files into 2003 xls files programatically in C#?
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by Victor Rodrigues
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Published on 2009-04-30T13:00:48Z
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2010/03/25
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I've found ExcelPackage, a better library than Excel Interop API to create and mantain programatically excel sheets, but they are generated in .xlsx. Most of people that will see the files have only office 2003 installed, so I need to convert, in my C# code, the final result into a .xls file.
Do you know any way to do it in C# code?
** UPDATE I'm trying to use SaveAs method, but it doesn't work, it just doesn't do anything, or return the error 0x800A03EC .
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